Voyager completed its primary mission in 1980, after taking spectacular photos of Jupiter and Saturn, and has been flying away from the sun ever since. You might recall the many previous times that this farthest-out spacecraft has been suspected of venturing out into the stars, leading many to wonder if NASA is simply crying wolf again. But an analysis of data from the machine’s plasma wave sensor suggests that Voyager 1 in fact reached interstellar space more than a year ago, in August 2012.